const IS_PROD = ['production', 'prod'].includes(process.env.NODE_ENV)

const plugins = []
if (IS_PROD) {
  plugins.push('transform-remove-console')
}

// lazy load ant-design-vue
// if your use import on Demand, Use this code
plugins.push(
  [
    '@babel/plugin-transform-runtime',
    {
      corejs: 3,
      helpers: true,
      regenerator: true,
      useESModules: false
    }
  ],
  [
    'import',
    {
      libraryName: 'ant-design-vue',
      libraryDirectory: 'es',
      style: true // `style: true` 会加载 less 文件
    }
  ]
)

module.exports = {
  presets: [
    '@vue/cli-plugin-babel/preset',
    [
      '@babel/preset-env',
      {
        useBuiltIns: 'entry',
        corejs: 3
      }
    ]
  ],
  plugins
}
